/* * Declarations of AX.25 type objects. * * Alan Cox (GW4PTS) 10/11/93 */ #ifndef _AX25_H #define _AX25_H #include #include #define AX25_T1CLAMPLO 1 #define AX25_T1CLAMPHI (30 * HZ) #define AX25_BPQ_HEADER_LEN 16 #define AX25_KISS_HEADER_LEN 1 #define AX25_HEADER_LEN 17 #define AX25_ADDR_LEN 7 #define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN) #define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN) /* AX.25 Protocol IDs */ #define AX25_P_ROSE 0x01 #define AX25_P_IP 0xCC #define AX25_P_ARP 0xCD #define AX25_P_TEXT 0xF0 #define AX25_P_NETROM 0xCF #define AX25_P_SEGMENT 0x08 /* AX.25 Segment control values */ #define AX25_SEG_REM 0x7F #define AX25_SEG_FIRST 0x80 #define AX25_CBIT 0x80 /* Command/Response bit */ #define AX25_EBIT 0x01 /* HDLC Address Extension bit */ #define AX25_HBIT 0x80 /* Has been repeated bit */ #define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */ #define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */ #define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */ #define AX25_COND_ACK_PENDING 0x01 #define AX25_COND_REJECT 0x02 #define AX25_COND_PEER_RX_BUSY 0x04 #define AX25_COND_OWN_RX_BUSY 0x08 #define AX25_COND_DAMA_MODE 0x10 #ifndef _LINUX_NETDEVICE_H #include #endif /* Upper sub-layer (LAPB) definitions */ /* Control field templates */ #define AX25_I 0x00 /* Information frames */ #define AX25_S 0x01 /* Supervisory frames */ #define AX25_RR 0x01 /* Receiver ready */ #define AX25_RNR 0x05 /* Receiver not ready */ #define AX25_REJ 0x09 /* Reject */ #define AX25_U 0x03 /* Unnumbered frames */ #define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */ #define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ #define AX25_DISC 0x43 /* Disconnect */ #define AX25_DM 0x0f /* Disconnected mode */ #define AX25_UA 0x63 /* Unnumbered acknowledge */ #define AX25_FRMR 0x87 /* Frame reject */ #define AX25_UI 0x03 /* Unnumbered information */ #define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */ #define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */ #define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */ #define AX25_POLLOFF 0 #define AX25_POLLON 1 /* AX25 L2 C-bit */ #define AX25_COMMAND 1 #define AX25_RESPONSE 2 /* Define Link State constants. */ enum { AX25_STATE_0, AX25_STATE_1, AX25_STATE_2, AX25_STATE_3, AX25_STATE_4 }; #define AX25_MODULUS 8 /* Standard AX.25 modulus */ #define AX25_EMODULUS 128 /* Extended AX.25 modulus */ enum { AX25_PROTO_STD_SIMPLEX, AX25_PROTO_STD_DUPLEX, AX25_PROTO_DAMA_SLAVE, AX25_PROTO_DAMA_MASTER }; enum { AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ AX25_VALUES_T1, /* Default T1 timeout value */ AX25_VALUES_T2, /* Default T2 timeout value */ AX25_VALUES_T3, /* Default T3 timeout value */ AX25_VALUES_IDLE, /* Connected mode idle timer */ AX25_VALUES_N2, /* Default N2 value */ AX25_VALUES_PACLEN, /* AX.25 MTU */ AX25_VALUES_PROTOCOL, /* Std AX.25, DAMA Slave, DAMA Master */ AX25_VALUES_DS_TIMEOUT, /* DAMA Slave timeout */ AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ }; #define AX25_DEF_IPDEFMODE 0 /* Datagram */ #define AX25_DEF_AXDEFMODE 0 /* Normal */ #define AX25_DEF_BACKOFF 1 /* Linear backoff */ #define AX25_DEF_CONMODE 2 /* Connected mode allowed */ #define AX25_DEF_WINDOW 2 /* Window=2 */ #define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ #define AX25_DEF_T1 (10 * HZ) /* T1=10s */ #define AX25_DEF_T2 (3 * HZ) /* T2=3s */ #define AX25_DEF_T3 (300 * HZ) /* T3=300s */ #define AX25_DEF_N2 10 /* N2=10 */ #define AX25_DEF_IDLE (0 * 60 * HZ) /* Idle=None */ #define AX25_DEF_PACLEN 256 /* Paclen=256 */ #define AX25_DEF_PROTOCOL AX25_PROTO_STD_SIMPLEX /* Standard AX.25 */ #define AX25_DEF_DS_TIMEOUT (3 * 60 * HZ) /* DAMA timeout 3 minutes */ typedef struct ax25_uid_assoc { struct ax25_uid_assoc *next; uid_t uid; ax25_address call; } ax25_uid_assoc; typedef struct { ax25_address calls[AX25_MAX_DIGIS]; unsigned char repeated[AX25_MAX_DIGIS]; unsigned char ndigi; char lastrepeat; } ax25_digi; typedef struct ax25_route { struct ax25_route *next; ax25_address callsign; struct net_device *dev; ax25_digi *digipeat; char ip_mode; } ax25_route; typedef struct { char slave; /* slave_mode? */ struct timer_list slave_timer; /* timeout timer */ unsigned short slave_timeout; /* when? */ } ax25_dama_info; #ifndef _LINUX_SYSCTL_H #include #endif typedef struct ax25_dev { struct ax25_dev *next; struct net_device *dev; struct net_device *forward; struct ctl_table systable[AX25_MAX_VALUES+1]; int values[AX25_MAX_VALUES]; #if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER) ax25_dama_info dama; #endif } ax25_dev; typedef struct ax25_cb { struct ax25_cb *next; ax25_address source_addr, dest_addr; ax25_digi *digipeat; ax25_dev *ax25_dev; unsigned char iamdigi; unsigned char state, modulus, pidincl; unsigned short vs, vr, va; unsigned char condition, backoff; unsigned char n2, n2count; struct timer_list t1timer, t2timer, t3timer, idletimer; unsigned long t1, t2, t3, idle, rtt; unsigned short paclen, fragno, fraglen; struct sk_buff_head write_queue; struct sk_buff_head reseq_queue; struct sk_buff_head ack_queue; struct sk_buff_head frag_queue; unsigned char window; struct timer_list timer; struct sock *sk; /* Backlink to socket */ } ax25_cb; /* af_ax25.c */ extern ax25_cb *volatile ax25_list; extern void ax25_free_cb(ax25_cb *); extern void ax25_insert_socket(ax25_cb *); struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); struct sock *ax25_find_socket(ax25_address *, ax25_address *, int); extern ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct net_device *); extern struct sock *ax25_addr_match(ax25_address *); extern void ax25_send_to_raw(struct sock *, struct sk_buff *, int); extern void ax25_destroy_socket(ax25_cb *); extern ax25_cb *ax25_create_cb(void); extern void ax25_fillin_cb(ax25_cb *, ax25_dev *); extern int ax25_create(struct socket *, int); extern struct sock *ax25_make_new(struct sock *, struct ax25_dev *); /* ax25_addr.c */ extern ax25_address null_ax25_address; extern char *ax2asc(ax25_address *); extern ax25_address *asc2ax(char *); extern int ax25cmp(ax25_address *, ax25_address *); extern int ax25digicmp(ax25_digi *, ax25_digi *); extern unsigned char *ax25_addr_parse(unsigned char *, int, ax25_address *, ax25_address *, ax25_digi *, int *, int *); extern int ax25_addr_build(unsigned char *, ax25_address *, ax25_address *, ax25_digi *, int, int); extern int ax25_addr_size(ax25_digi *); extern void ax25_digi_invert(ax25_digi *, ax25_digi *); /* ax25_dev.c */ extern ax25_dev *ax25_dev_list; extern ax25_dev *ax25_dev_ax25dev(struct net_device *); extern ax25_dev *ax25_addr_ax25dev(ax25_address *); extern void ax25_dev_device_up(struct net_device *); extern void ax25_dev_device_down(struct net_device *); extern int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); extern struct net_device *ax25_fwd_dev(struct net_device *); extern void ax25_dev_free(void); /* ax25_ds_in.c */ extern int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int); /* ax25_ds_subr.c */ extern void ax25_ds_nr_error_recovery(ax25_cb *); extern void ax25_ds_enquiry_response(ax25_cb *); extern void ax25_ds_establish_data_link(ax25_cb *); extern void ax25_dev_dama_on(ax25_dev *); extern void ax25_dev_dama_off(ax25_dev *); extern void ax25_dama_on(ax25_cb *); extern void ax25_dama_off(ax25_cb *); /* ax25_ds_timer.c */ extern void ax25_ds_set_timer(ax25_dev *); extern void ax25_ds_del_timer(ax25_dev *); extern void ax25_ds_timer(ax25_cb *); extern void ax25_ds_t1_timeout(ax25_cb *); extern void ax25_ds_heartbeat_expiry(ax25_cb *); extern void ax25_ds_t3timer_expiry(ax25_cb *); extern void ax25_ds_idletimer_expiry(ax25_cb *); #include /* ax25_iface.c */ extern int ax25_protocol_register(unsigned int, int (*)(struct sk_buff *, ax25_cb *)); extern void ax25_protocol_release(unsigned int); extern int ax25_linkfail_register(void (*)(ax25_cb *, int)); extern void ax25_linkfail_release(void (*)(ax25_cb *, int)); extern int ax25_listen_register(ax25_address *, struct net_device *); extern void ax25_listen_release(ax25_address *, struct net_device *); extern int (*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); extern int ax25_listen_mine(ax25_address *, struct net_device *); extern void ax25_link_failed(ax25_cb *, int); extern int ax25_protocol_is_registered(unsigned int); /* ax25_in.c */ extern int ax25_rx_iframe(ax25_cb *, struct sk_buff *); extern int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *); /* ax25_ip.c */ extern int ax25_encapsulate(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int); extern int ax25_rebuild_header(struct sk_buff *); /* ax25_out.c */ extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct net_device *); extern void ax25_output(ax25_cb *, int, struct sk_buff *); extern void ax25_kick(ax25_cb *); extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); extern void ax25_queue_xmit(struct sk_buff *); extern int ax25_check_iframes_acked(ax25_cb *, unsigned short); /* ax25_route.c */ extern void ax25_rt_device_down(struct net_device *); extern int ax25_rt_ioctl(unsigned int, void *); extern int ax25_rt_get_info(char *, char **, off_t, int, int); extern int ax25_rt_autobind(ax25_cb *, ax25_address *); extern ax25_route *ax25_rt_find_route(ax25_address *, struct net_device *); extern struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *); extern void ax25_rt_free(void); /* ax25_std_in.c */ extern int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int); /* ax25_std_subr.c */ extern void ax25_std_nr_error_recovery(ax25_cb *); extern void ax25_std_establish_data_link(ax25_cb *); extern void ax25_std_transmit_enquiry(ax25_cb *); extern void ax25_std_enquiry_response(ax25_cb *); extern void ax25_std_timeout_response(ax25_cb *); /* ax25_std_timer.c */ extern void ax25_std_heartbeat_expiry(ax25_cb *); extern void ax25_std_t1timer_expiry(ax25_cb *); extern void ax25_std_t2timer_expiry(ax25_cb *); extern void ax25_std_t3timer_expiry(ax25_cb *); extern void ax25_std_idletimer_expiry(ax25_cb *); /* ax25_subr.c */ extern void ax25_clear_queues(ax25_cb *); extern void ax25_frames_acked(ax25_cb *, unsigned short); extern void ax25_requeue_frames(ax25_cb *); extern int ax25_validate_nr(ax25_cb *, unsigned short); extern int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); extern void ax25_send_control(ax25_cb *, int, int, int); extern void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, ax25_digi *); extern void ax25_calculate_t1(ax25_cb *); extern void ax25_calculate_rtt(ax25_cb *); extern void ax25_disconnect(ax25_cb *, int); /* ax25_timer.c */ extern void ax25_start_heartbeat(ax25_cb *); extern void ax25_start_t1timer(ax25_cb *); extern void ax25_start_t2timer(ax25_cb *); extern void ax25_start_t3timer(ax25_cb *); extern void ax25_start_idletimer(ax25_cb *); extern void ax25_stop_heartbeat(ax25_cb *); extern void ax25_stop_t1timer(ax25_cb *); extern void ax25_stop_t2timer(ax25_cb *); extern void ax25_stop_t3timer(ax25_cb *); extern void ax25_stop_idletimer(ax25_cb *); extern int ax25_t1timer_running(ax25_cb *); extern unsigned long ax25_display_timer(struct timer_list *); /* ax25_uid.c */ extern int ax25_uid_policy; extern ax25_address *ax25_findbyuid(uid_t); extern int ax25_uid_ioctl(int, struct sockaddr_ax25 *); extern int ax25_uid_get_info(char *, char **, off_t, int, int); extern void ax25_uid_free(void); /* sysctl_net_ax25.c */ extern void ax25_register_sysctl(void); extern void ax25_unregister_sysctl(void); #endif